// |reftest| async // This file was procedurally generated from the following sources: // - src/dstr-assignment-for-await/array-rest-yield-ident-valid.case // - src/dstr-assignment-for-await/async-function/async-func-decl.template /*--- description: When a `yield` token appears within the DestructuringAssignmentTarget of an AssignmentRestElement and outside of a generator function body, it should behave as an IdentifierReference. (for-await-of statement in an async function declaration) esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation features: [destructuring-binding, async-iteration] flags: [generated, noStrict, async] info: | IterationStatement : for await ( LeftHandSideExpression of AssignmentExpression ) Statement 1. Let keyResult be the result of performing ? ForIn/OfHeadEvaluation(« », AssignmentExpression, iterate). 2. Return ? ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement, keyResult, assignment, labelSet). 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation [...] 5. If destructuring is true and if lhsKind is assignment, then a. Assert: lhs is a LeftHandSideExpression. b. Let assignmentPattern be the parse of the source text corresponding to lhs using AssignmentPattern as the goal symbol. [...] ---*/ let yield = 'prop'; let x = {}; let iterCount = 0; async function fn() { for await ([...x[yield]] of [[33, 44, 55]]) { assert.sameValue(x.prop.length, 3); assert.sameValue(x.prop[0], 33); assert.sameValue(x.prop[1], 44); assert.sameValue(x.prop[2], 55); iterCount += 1; } } let promise = fn(); promise .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE) .then($DONE, $DONE);